Question # 1

Liquid crystals are used for the early diagnosis of breast cancer by

Choose an answer

injecting liquid crystals

taking liquid crystals as diet

painting liquid crystals on the surface of breast

inhaling the smell of liquid crystals

Contaminated soil can be cleaned by various methods. Which method is not used to clean the soil

Choose an answer

diffusion

convection

electrophoresis

chromatography

The weakest intermolecular forces present in a liquid may be

Choose an answer

Dipole-induced dipole forces

dipole-dipole forces

instantaneous forces

electrostatic forces between ions in a ionic solid

On ascending the electrochemical series strength as reducing agent

Choose an answer

Increases

Decreases

Remains same

not determinable

If v is the volume of one molecule of a gas under given conditions, then Van der Waals constant b is (N_Ais Avogadro number)

Choose an answer

The respiration process taking place in animals depends on a difference in

Choose an answer

Partial pressure

Osomotic pressure

Vapour pressure

Atomospheric pressure

Diamond is a bad conductor of electricity because:

Choose an answer

it has a tight structure

it has a high density

there are no free electrons

none of the above

Which woody raw material is used for the manufacture of paper pulp?

Choose an answer

cotton

bugases

poplar

rice straw

The reaction of alkyl halide in the presence of alcoholic KOH is

Choose an answer

Substitution

Addition

Acid-base

Elimination

The fertilizer contains 33___35%n is:

Choose an answer

ammonium nitrate

potassium nitrate

urea

ammonia

In a crystal the atoms are locate at the position of:

Choose an answer

infinite potential energy

minimum potential energy

Zero potential energy

maximum potential

Choose an answer

Increase in concentration of 1

Decrease in concentration of I₂

Increase in temperature

Increase in total pressure

Which of the following discoveries resulted in a version of the Mendeleefs

periodic law

Choose an answer

The nucleus of atom by Rutherford

The elements polonium and radium by the Curies

Atomic numbers by Moseley

x-rays by Roentgen

Which element should have the greatest value for electronegativity when combined with hydrogen

Choose an answer

Na

Si

S

Cl

Choose an answer

Positive sign

Negative sign

Without any sign

None

In the reaction of oxalic acid with KMnO₄and H₂SO₄is slow at the beginning but after sometimes the reaction becomes faster due to

Choose an answer

Formation of MnSO₄which acts as 'Auto catalyst

Formation of CO₂which acts as 'Auto catalyst

Formation of K₂SO₄which acts as 'Auto catalyst

Evolution of O₂gas which acts as 'Auto catalyst

What is the nature of SO₂

Choose an answer

Basic

Strongly acidic

Weakly acidic

Amphoteric

The rate determining step is the :

Choose an answer

Slowest step.

Fastest step.

Moderate step.

Both (a) and (b).

Ketones are prepared by the oxidation of:

Choose an answer

Primary alcohol

Secondary alcohol

Tertiary alcohol

None of these

Ecosystem is a smaller unit of

Choose an answer

Hydrosphere

Lithosphere

Biosphere

Atmosphere

Atoms obey octet rule by sharing-electrons making covalent bonds according to

Choose an answer

Lewis and Kossal theory

Valance bond theory

VSEPR theory

Molecular orbital theory

Which are used as essences(flowers)?

Choose an answer

aldehydes

Ketones

alcohols

esters

More Classes

Other Links

Chemistry General Science Test Medium Mode MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer